Question about Soundcraft GB4 Series 24-Channel Live Production Console

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Mixer not working

Mixer is not on, I checked the main power source, fuse and connectors. But nothing found upnormal

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Check the probes,

Posted on Apr 13, 2014

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Posted on Jan 02, 2017

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On my 1991 gmc my my heater switch does not come on check fuses still nothing


either main power to switch or ground wire from switch loose, bad connection , etc., I believe the main power source is through ignition switch ! I'll look @ my wire diagram & get back to ya, its EASTER, AFTER 1:00AM , see ya later !

Mar 31, 2013 | 1991 GMC Sierra

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Behringer PMP5000 Mixer. Connected a speakerOn cable to Output A while device was ON. Went to do the same thing on Output B and heard a spark. Turned off the mixer. Now, it will not come on. Checked the...


Chances are you've blown the output transistors. Speakon connectors cannot short out but jack connectors can and if it was not inserted properly you'll have presented a dead short to your powered mixer. In any event it is really bad idea to connect anything when it's switched on. If you're really lucky replacing the output stage (which will probably be dead short on the transistors) and re-adjusting the bias should sort you out.

Apr 08, 2017 | Behringer Europower Pmp5000 Powered Mixer...

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How to connect floor monitor to mixer


You need to connect the speakers using an XLR cable into the Main output jack on the back of the mixer. If they are powered speakers you will need to connect them into a power source and turn them on AFTER connecting them. Once powered on you can control the signal going to the mixer with the Main Mix fader.

  1. Turn mixer on
  2. Ensure Main Mix level is at zero
  3. Connect from Main Output to Monitors
  4. Turn Monitors on
  5. Turn up Main mix to desired level

Sep 14, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

My hobart n50 mixer,when pluged in does nothing at all. why? and what to do?


The N50 is a heavy duty / commercial counter top mixer. It is available in several different versions for different power sources. Make sure yours is the model for use with the power available at your location. The power versions are:

100-120/60/1, 100/50/1, 230/50/1, 220/60/1 and 230/60/1


This lists the information in the following format: voltage/frequency/phase. If used in the US or Canada (and many other parts of the world) you would most likely want the 100-120/60/1 or the 230/60/1 version. All are single phase, so this shouldn't be an issue to worry about. Use of any of the other versions could result in shortened life expectancy of the mixer or immediate, catastrophic failure of the mixer and possibility of burns, shock or electrocution if connection is attempted.

If the mixer matches the power available, check for proper wiring at the source point of connection and in the mixer. You may need an electrician to change the power at the connection point from 100-120/60/1 to 230/60/1 (or vice-versa since BOTH are available in North America). Also check to be sure that fuses or circuit breakers in the electrical panel are intact and on. Do not overlook GFI outlets if using the 100 to 120/60/1 version. Reset any tripped GFI outlet. If still unable to operate, verify that power is present at the connection point. If unable to operate, contact an electrician to check the power and wiring of the mixer.

The mixer data sheet is available here.

Jul 12, 2011 | Hobart N50 Stand Mixer

1 Answer

Pluggin headphones into my behringer 2442fx mixer is creating a lot of static coming out of the headphones.


This happens when you have lose earth connection from your main source power supply. Check the earth connections (grounding) which should be available in the mixer, i.e some power cords don;t have earth wire, so change this if you think yours don't have it. Also check the grounding of the other items attached to your mixer, basically grounding is very important to reduce the static shorts. Try changing the power supply source, change to other outlet and check if it is OK.

Apr 14, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

How do I attach power amp to 1832 mixer


There are a number of configurations for a mixer like the 1832, the most common are PA system and Recording system. There are Main output jacks which carry the mix as summed in the main faders. These in a PA system would feed the pa amplifiers which drive the house speaker system for the audience. These connectors are XLR 3 pin type on the rear, intended for professional pa amplifiers which use balanced +4dbv line input level. Amplifier which have 3 pin XLR connectors for input signals can accept that high level signal. For home style HiFi amplifiers, the signal level is nominally -10DBv and balanced or unbalanced signal lines with 1/4in diameter phone plugs which are connected to the mixer by way of a second set of Main output connectors which are 1/4in phone jacks. Use whichever amplifier input level your amp has.
If you are not using it as a main PA house mixer, but using it for recording, the main output connectors go to a 2 channel recorder or computer sound card recorder. The power amp and your monitor speakers are connected to the connectors labeled "Control Room" (CTRL Rm). These output are useful for recording because the signal through the mixer can be monitored from several buses, Solo, main mix, selected by buttons provided. The buttons only affect the signal heard through the control room monitors, and not the main output which only sees the main mix so selecting "solo" does not interrupt the signal going to the recorder while the engineer in the control can be checking other signal paths through the board.

Jan 21, 2011 | Behringer Xenyx 1832fx Mixer 18 Input 32...

1 Answer

Kyocera mita 5035 code 6400 c


Zero-crossing signal problem

• The main PCB does not detect the zero-crossing signal (Z CROSS SIG) for the time specified below.


Causes


Poor contact in the connector terminals. - Check the connection of connectors YC1-3 on the main PCB and YC2-6 on the power source PCB, and the continuity across the connector terminals. Repair or replace if necessary.


Defective power source PCB. - Check if the zero-crossing signal is output from YC2-6 on the power source PCB. If not, replace the power source PCB.


Defective main PCB. - Replace the main PCB if C6400 is detected while YC2-6 on the power source PCB outputs the zero-crossing signal.

Dec 18, 2010 | Kyocera Mita KM-5035 Printer

1 Answer

I have a LG 37lc2d and it suddenly turn off and wont come back on, the stand by lights doesnt turn on either. i was wondering if its just the power supply? or how can i troubleshoot this my self to see...


There is a fuse on the power supply close to where the A/C is connected to the board. If the fuse is blown, look at the board and see if there are any burned components and or swollen capacitors. If there are bad components, I would suggest getting a new board.
If the board looks OK, disconnect the connectors from the board but leave in the A/C connector (this way you can isolate the power supply board), replace the fuse, and power up the TV.
If the fuse pops after the power is applied to the unit, then the power supply is bad.
If the fuse is still good, then power off the TV, connect on the main board’s connections, and power up the TV.
If the fuse is still good, then power off the TV, connect the inverters, and power up the TV.
If the fuse blows now, then the inverters and or the panel are bad.
A working power supply will create 5vdc for the main board’s stand by source voltage. This can be found on the power supply at the main board’s connector and it is labeled in black text.
I hope this information helps you.
Good Luck.

May 28, 2010 | LG 37LC2D Television

1 Answer

Behringer XENYX 1622FX, won't power on. Phantom power works(?)


After reviewing the schematic, I don't understand how the Phantom power can REMAIN on with the power switch off... this CANNOT occur except for what energy is left in the 48 volt supply filter cap... This might last for minutes after the fuse went... UNLESS you have devices connected which are backfeeding the 48 volts. (which would be a disaster)

The 48 volts, +/- 12 volts and +/- 15 volts and the +5 volts ALL come from the SAME switching power supply. I suspect one of the filter caps went or the primary switching regulator a TDP245Y chip.

You should ONLY work on the line side of this using an ISOLATION transformer since the line side has lethal voltages.

To do testing, one replaces the fuse and puts a 60 Watt light bulb in series with the hot side of the inout line. The lamp "acts" as a resetable fuse and limits the current for testing. When all is well again, the lamp will remain out with the power flowing through it.

The D1 diode bridge and C7 input rectifier and filter are first things to check. You can do those with an ohmmeter.

I will caution you to ALWAYS power any and all equipment from the SAME power source. Plugging in devices from across the room will set up ground loops and any ground fault will fry equipment.

Apr 04, 2010 | Behringer Xenyx 1002fx Mixer 10 Input 2...

1 Answer

Phonic Helix Board sound problems


You don't specify which model Phonic mixer in question.
Is it a powered mixer ? And are you plugging your speakers into the speaker outputs ? If it's not a powered mixer and you're plugging speakers into the Line Outputs, you're not using a power amplifier between the line outputs and your speakers - this won't work.
If it is a powered mixer and you are plugging speakers into the speaker output connectors and still getting little or no sound, check your speaker cables and the speakers themselves by plugging them into known good amps.

Jul 03, 2009 | Phonic Helix18fw 18 Channel Mixer with...

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